Mao Otoha, who is now a second year high school student at Seirei Private High School, is now performing as the top idol Hana in Aikatsu Planet! A few months after the Planet Princess Grand Prix, her schedule is packed everyday. The reason why Mao can be an active idol is because of the bond she has with her fans, in which she has changed and felt touched, and now would like to deliver her gratitude to those important around her by launching the "Aikatsu Planet! Gratitude Festival". With a band, an axe and a musical... even climb a cliff!? For fans and friends to receive the feeling of happiness, this gratitude festival will be overflowing with emotions and everyone's joy, let it begin!